Finding the Fourth Proportional to 89,781.39, 123,899.18 and 49,496.63

Step by Step Solution

1. Step 1: Write the proportion equation
   89,781.39 : 123,899.18 = 49,496.63 : x
2. Step 2: Convert to fraction form
   89,781.39/123,899.18 = 49,496.63/x
3. Step 3: Cross multiply
   89,781.39x = 123,899.18 × 49,496.63
4. Step 4: Simplify right side
   89,781.39x = 6,132,591,002.78
5. Step 5: Solve for x
   x = 6,132,591,002.78/89,781.39
6. Step 6: Final answer
   x = 68,305.81